"Sat, 18 Jan 2025 18:00:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20250118
Only TIME
18:00:04
General datetime
2025-01-18 18:00:04Z
For Database
2025-01-18 18:00:04
For HTTP1.1
Sat, 18 Jan 2025 18:00:04 GMT